13201223240 has 16 divisors (see below), whose sum is σ = 29702752380. Its totient is φ = 5280489280.

The previous prime is 13201223149. The next prime is 13201223251. The reversal of 13201223240 is 4232210231.

It can be written as a sum of positive squares in 2 ways, for example, as 13196954884 + 4268356 = 114878^2 + 2066^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165015251 + ... + 165015330.

Almost surely, 2^13201223240 is an apocalyptic number.

13201223240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13201223240 is an abundant number, since it is smaller than the sum of its proper divisors (16501529140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13201223240 is a wasteful number, since it uses less digits than its factorization.

13201223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330030592 (or 330030588 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13201223240 its reverse (4232210231), we get a palindrome (17433433471).

The spelling of 13201223240 in words is "thirteen billion, two hundred one million, two hundred twenty-three thousand, two hundred forty".